GMV DC Inverter VRF
51
Description of each stage of debugging progress
System is allocating addresses.
Master IDU is not set. Please set
master IDU. If it’s not set in 1min,
system will set the master IDU
randomly.
Allocation is finished. Start next
progress.
03_Confirm the
quantity of
modules
LED3 displays the quantity of modules.
Confirm the number manually.
System has confirmed the quantity of
modules. Start next progress.
04_Confirm the
quantity of IDUs
LED3 displays the quantity of IDUs.
Confirm the number manually.
System has confirmed the quantity of
IDUs. Start next progress.
05_Detect
internal
communication
System detects “driven communication
error between master unit and inverter
compressor”.
System detects “driven communication
error between master unit and inverter
fan”.
IDU/ODU “high proportion of rated
capacity”.
IDU/ODU “low proportion of rated
capacity”.
Detection is finished. Start next
progress.
06_Detect
outdoor
components
System detects error in outdoor
components.
No error in outdoor components. Start
next progress.
07_Detect
indoor
components
System detects error in indoor
components. XXXX is the project no. of
the faulted IDU. 3s later, relevant error
code is displayed. For example, IDU
no. 100 has d5 error, then LED3
displays like this: 01 (2s later) 00 (2s
later) d5, and repeat again.
No error in indoor components. Start
next progress.
08_Confirm
preheated
compressor
Preheat time for compressor is less
than 8h.
Preheat time for compressor is 8h.
Start next progress.
09_Refrigerant
judgments
before startup
System refrigerant is not enough.
System downtime equilibrium pressure
is lower than 0.3MPa.
System refrigerant is normal. Start next
progress.